CN203409581U - Axial pre-tightening device for ball screw - Google Patents
Axial pre-tightening device for ball screw Download PDFInfo
- Publication number
- CN203409581U CN203409581U CN201320498274.9U CN201320498274U CN203409581U CN 203409581 U CN203409581 U CN 203409581U CN 201320498274 U CN201320498274 U CN 201320498274U CN 203409581 U CN203409581 U CN 203409581U
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- Prior art keywords
- machine tool
- bearing seat
- bed body
- bearing block
- ball screw
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- Expired - Fee Related
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- 210000004907 gland Anatomy 0.000 claims abstract description 5
- 230000005540 biological transmission Effects 0.000 abstract description 2
- 238000006073 displacement reaction Methods 0.000 abstract description 2
- 230000006835 compression Effects 0.000 abstract 1
- 238000007906 compression Methods 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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Abstract
The utility model provides an axial pre-tightening device for a ball screw. The axial pre-tightening device comprises a bed body of a machine tool, wherein a servo motor bearing seat is arranged at the front end of the bed body of the machine tool, a back bearing seat is arranged at the rear end of the the bed body of the machine tool, a ball screw pair, a compression nut, a bearing gland and a bearing combination are mounted in the servo motor bearing seat, a protruding guide tenon is arranged on the servo motor bearing seat, a guide slot is formed in the bed body of the machine tool, and corresponds to the servo motor bearing seat, the two, namely the guide tenon and the guide slot are matched, an adjusting screw rod is arranged in the guide tenon, and the adjusting screw rod is connected with a fixed plate on the bed body of the machine; a boss is arranged on the bed body of the machine tool, which corresponds to the back bearing seat, and the boss is in contact with the back bearing seat. The axial pre-tightening device provided by the utility model well performs bearing clearance fit, then axial stretching and pre-tightening are performed on ball screws of a transmission system of the machine tool by adjusting the displacement of the whole bearing seat, the adjusting precision is improved, the axial force is enhanced, the linear operation precision and the dynamic response precision of the screws are greatly improved, and the operation during assembly is further facilitated.
Description
Technical field
The utility model belongs to technical field, relates in particular to a kind of ball screw axial pretightening device.
Background technology
Current general machining center workbench ball leading screw driving system, what the pretension in its assembling process adopted is all that the nut that pressured mandrel holds is adjusted, be subject to it to adjust the impact of mode, the axial force of adjusting precision and adjustment is inadequate, thereby has affected linear running precision and the dynamic response precision of screw mandrel.
Summary of the invention
The utility model provides a kind of ball screw axial pretightening device, solved the inadequate shortcoming of axial force that pre-tightening apparatus in background technology is adjusted precision and adjustment.
The technical solution of the utility model is achieved in that a kind of ball screw axial pretightening device, comprise machine tool body, machine tool body front end is provided with servomotor bearing block, rear end is provided with rear bearing block, in servomotor bearing block, be equipped with ball screw assembly,, clamp nut, bearing gland and bearing combination, on servomotor bearing block, establish bossed guiding tenon, the machine tool body corresponding with servomotor bearing block is provided with gathering sill, the two matches, in guiding tenon, be provided with adjustment screw rod, adjust screw rod and be connected with the fixed head on machine tool body;
The machine tool body corresponding with rear bearing block is provided with boss, and boss contacts with rear bearing block.
The beneficial effects of the utility model are: after the utility model adopts bearing clearance to work good, by adjusting the displacement of whole bearing block, realize the ball screw of machine tool transmission system is carried out to axial tension and pretension, improved adjustment precision, strengthened axial force, linear running precision and the dynamic response precision of screw mandrel improve greatly, the operation while having facilitated assembling.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is A-A schematic diagram of the present utility model:
Fig. 3 is side view of the present utility model.
Part explanation: 1, fixed head, 2, servomotor bearing block, 3, adjust screw rod, 4, machine tool body, 5, rear bearing block, 6, gathering sill, 7, guiding tenon, 8, boss, 9, ball screw assembly,, 10, clamp nut, 11, bearing gland, 12, bearing combination.
The specific embodiment
Below in conjunction with accompanying drawing, the utility model is further described: a kind of ball screw axial pretightening device, comprise machine tool body 4, machine tool body 4 front ends are provided with servomotor bearing block 2, rear end is provided with rear bearing block 5, in servomotor bearing block 2, be equipped with ball screw assembly, 9, clamp nut 10, bearing gland 11 and bearing combination 12, on servomotor bearing block 2, establish bossed guiding tenon 7, the machine tool body 4 corresponding with servomotor bearing block 2 is provided with gathering sill 6, the two matches, in guiding tenon 7, be provided with and adjust screw rod 3, adjusting screw rod 3 is connected with the fixed head 1 on machine tool body 4, the machine tool body 4 corresponding with rear bearing block 5 is provided with boss 8, boss 8 contacts with rear bearing block 5.
Servomotor bearing block 2 can move forward and backward in the gathering sill 6 at machine tool body 4 under the effect of adjusting screw rod 3, and rear bearing block 5 is fixed by boss 8 in the rear end of machine tool body 4, thereby to ball screw axial tension, plays the object of pretension.
Claims (2)
1. a ball screw axial pretightening device, comprise machine tool body (4), machine tool body (4) front end is provided with servomotor bearing block (2), rear end is provided with rear bearing block (5), in servomotor bearing block (2), be equipped with ball screw assembly, (9), clamp nut (10), bearing gland (11) and bearing combination (12), it is characterized in that establishing on servomotor bearing block (2) bossed guiding tenon (7), the machine tool body (4) corresponding with servomotor bearing block (2) is provided with gathering sill (6), the two matches, in guiding tenon (7), be provided with and adjust screw rod (3), adjusting screw rod (3) is connected with the fixed head (1) on machine tool body (4).
2. a kind of ball screw axial pretightening device according to claim 1, is characterized in that the machine tool body (4) corresponding with rear bearing block (5) is provided with boss (8), and boss (8) contacts with rear bearing block (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320498274.9U CN203409581U (en) | 2013-08-15 | 2013-08-15 | Axial pre-tightening device for ball screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320498274.9U CN203409581U (en) | 2013-08-15 | 2013-08-15 | Axial pre-tightening device for ball screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203409581U true CN203409581U (en) | 2014-01-29 |
Family
ID=49972506
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320498274.9U Expired - Fee Related CN203409581U (en) | 2013-08-15 | 2013-08-15 | Axial pre-tightening device for ball screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203409581U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103433796A (en) * | 2013-08-15 | 2013-12-11 | 烟台海德汽车零部件有限责任公司 | Axial pre-tightening device of ball screw |
| CN105032960A (en) * | 2015-07-30 | 2015-11-11 | 南通科技投资集团股份有限公司 | Screw rod stretching device |
-
2013
- 2013-08-15 CN CN201320498274.9U patent/CN203409581U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103433796A (en) * | 2013-08-15 | 2013-12-11 | 烟台海德汽车零部件有限责任公司 | Axial pre-tightening device of ball screw |
| CN105032960A (en) * | 2015-07-30 | 2015-11-11 | 南通科技投资集团股份有限公司 | Screw rod stretching device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140129 Termination date: 20150815 |
|
| EXPY | Termination of patent right or utility model |